Improvement in art of producing printing-surfaces



UNIT-ED STATES PATENT {OEEICEA l JoHNrf. JAMI'SoN, oEoAMBEiDeE, MA-ssAoEUsETTs.

IMPROVEQNIENTAIN` ART'OF `PRooucslnePRINTInca-summers.

Specification forming part of Letters `Patenti No. 198,847, dated January 1, 1878, application filed A i A l n August17,l87`7. Y Al To all/whom it may concern!` l i "Be it known that I, JOHN P. JAM'ISON, of

l Cambridge, inthe4 countyof Middlesexand- State of Massachusetts, have invented certain new' and useful improvements in the art Vof producing sunkendesigns, 85e., in metal, wood, or othermaterial, of which ,the following, taken in connection with 4the accompany-` ing drawings, is a specification.

Myrinvention relates to improvements in the art of producing sunken and raised iig-l ures, letters,or designs, in imitation of hand-` engraving, in metal, ivory, wood,A leather, or

Aother compressible A. material, whereby such.

articles, when required in quantities, can be produced ata very small cost as'compared with hand-engravingthe method `of producing such'work heretofore practiced.

l *My invention consists, iirst, `^in the method of producing iigures or ornamental designs i Mylinvention further consists in the method of `producing designs in relief Vuponcylindrical or curved tsurfaces, that shall be adapted to emboss the reverse of such designs in metal, wood, ivory, or other compressiblematerial, byrst engraving said design or sinking it into the surface of a thin hat plate or ribbon of soft steel, tempering or hardening said en- A graved plate or ribbon, producngthe reverse" fof said design in relief upon a soft-metal plate or ribbon, bypassing the two plates between a pair of powerful pressure-rolls, with the en- A graved surface of the hardened plate 'or ribbon infcontact with the surfaceofA the soft-er metal plate, bending said-relief-plate or ribbon into the form of a circular hoop, or seg-A ment of a hoop, tempering or hardening the same, and then securing it to the Aperiphery of a cylinder, withlits engravedA orrelief-surface outward.

A great many articles are constantly being i manufactured in metal, ivory, and wood that 'require to be lettered or ornamented by hav-l n ing engraved or cut therein the desired design, Aorlaiixedw thereon printed labels orA i painted designs. i A A In the canse of metal or ivory articles, such, for instance, as checks or buttons fororgan#4 stops andAname-plates, the letteringor deA sign has heretofore been done byhand, by means Aof the graver, as also havecertain kinds ofornamentation of wood-work, such, for ini stancefas the gilded vines and scrolLwork now so common on -blackwalnut and ebony n pictureframes. i

Cigar boxes have ling Awhich they receive.

Manufacturers of pianos, organs, and other musical instruments place their `names in some conspicuous place upon the front of their instruments, which is usually done by painting or stenciling directlyupon the wood. One objectionto this method of applying the name `is that it is .comparatively Aan easy matter to remove aname from an'inferior Ainstrument and placethereon the name of someAother manufacturer of greater note, and sell ,the instrumentfor one of his manufacture. j

Thisrobjection maybe obviated by using my improved method of applying the name,

togetherwith anydesired design, by sinking the letters and other gures below the genf eral surface of the wood by passing it between A the A. pressure-rolls, and atthe same time'ap- `plying to said 'design a size, tol which the re-` A quired bronze or gold-leaf may be afterward applied. A

I also proposeto substitutefor the printed `paperAlabels now used on cigar and `other small.l packing -boXes 4designs and lettering` printed directly onto the wood before the n parts of which the'bor. is made are nailed together, said designs and lettering beingimpressed -into the wood in imitation of hand-` engraving. A f. ,A Designs of any desiredform, as well as lettering, maybesuccessfully applied to metal or ivory, in exact imitation of hand-;n`graving, by my improved method; and the artil printedA labels pas-ted A thereon, which are liable to be injured by eX- `posure to the weather and the rough handcles heretofore mentioned, and many others,

when a number of duplicates are required,4r

mav bel produced at avery small cost.

Figure 1 of the drawings is a side elevation of a machine which I use to carry out my improved method of producing imitation engraving. Fig. 2 is an end view.l Figx is a Vertical section on line w `.ia on Fig. 2. Figs. 4 and 5 are, respectively, an end view and a central'longitudinal section of the pressure- C G, and\has secured to the end of its shaftv the spur-gear ywheel D, which engages with` the gear-wheel E, secured to the shaft of the cylinder B. j

The cylinder B has its bearings in' the halfboxes F, which rest upon the rubber springs ,-beneath which is placed the metal plate b, which rests upon, and may be adjusted t0 vary thejpressure or distance apart of, the

cylinders A and B by means of the set-screw l c, as shown in detail, drawn to an enlarged scale, in Fig. 6.` f

G is the driving-pinion, mounted upon the short shaft H, and engaging with the gearwheel D, forthe purpose of imparting rotary motion to the cylinders A and B when revolved by means of the crank I, or by means of a pulley and belt substituted therefor.

J is an inking-roll, mounted in suitable bearings in the side frames, and adapted-to be revolved in contact with the raised desi gn ou the cylinder B and the distributingfroll K, which takes the ink or size from the roll L and transfers it. to the roll J, from which it is deposited upon the raised design.

Motion is imparted to the inkingrolls by means of the belt M, leading from the pulley 'N secured upon the shaft of the cylinder B to the pulley O on the end of the shaft of the roll K. y The cylinder B has forlned in its periphery l a shallow groove, d, of suitable width, within which is placed a thin metal band, or aportion of a band or hoop, c, having 'formed thereon in relief, or raised above the general level or surface of said band, letters, figures, or designs, the exact reverse of an engraved plate the counterpart of which it isdesired tol reproduce upon metal, ivory, or wood.

Pis a cylinder, having secured thereto the steel band or hoop f, upon the outer face of which has been engraved by hand the desired de sign while in a liat state,the letters or design being cut into or below the surface of the plate, and. the band is hardened after being yby Letters Patent of the United States, is

bent to the` desired circle or are of a circle and secured firmly to the cylinder. Y

The cylinder P, with its engraved band, is placed in the machine beneath the cylinder A, or a similar one, to which a heavy pressure is applied in any well-known manner; and a periphery of the 'plate orribbon of softer metal is passed between said cylinders, to form upon the softer metal band or strip' the exact reverse of the engraved design. f l

In cases where the engraved design is to be duplicated inmetal, the relief designisformed upon a soft-steel band or ribbon, which is afterward tempered or hardened.

4I' am aware that 4it is common to engrave designs upon steel rolls, and produce -the reverse of such designs by rolling said steel roll in contact with a softer metal roll or ,cyl inder; but this is a very expensive method, and one that could not be successfully applied to the production of such cheap articles as itis designed to apply this invention to.

By engraving the design on a thin flat plate of steel, and then applying it to a cylinder or roll, which may be of cast or wrought iron, a

comparatively inexpensive machine is pro duced, and an economical method of duplicating engraved designs.

What I claim as new, and desire to secure l. The method of producing letters, figures, orornamental designs in' relief upon fiat plates of metal, wood, ivory, or other compressible material, by engraving1 or sinking said design into the surface of a thin flat plate of steel, and

then passing said engraved plate, with its en# graved face resting upon the surface of a flat plate of softer metal, wood, ivory, or other compressiblematerial, between a pair of press ure-rolls, substantially as described. s

2. The method of producing designsV in re lief upon cylindrical surfaces, adapted to em- -boss thereverse of said designs in metal,`wood, or ivory, by first engraving or sinking the def.

sign into the surface of a soft iiat plate or ribbon of steel,tempering or hardening said plate or ribbon, passing said plate orribbon, with its engraved surface in contact with a similar plate or ribbon of soft steel, between a pair of smooth pressure-rolls, to produce upon said soft-'steel plate or ribbon the reverse of said design in relief, bending 'said relief plate or ribbon into the form of a circular hoop or segment, tempering` said hoop orA segment, and then securing said hoop or segment to the periphery of a cylinder, substantially as described. s

Executed at Boston, Massachusetts, this 10th `day of August, 1877. l

JOHN P. JAMISON. Witnesses:

N. C. LOMBARD, J osIAH W. HUBBARD. l 

